{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x45e86f12f6fa6addafcce637851c6d69c6064b442186dcd465300667240ab222",
    "signature": "0xfd44cd6c92b539438af2c77a1ef8a0e4dd4e909ab34f0518b5b7ebc6b1b80e6e0f47832117eb5e483e1d68310737a4d679dfde6fe9217cab7f61b0fd59043a5d1b",
    "signer": "0x022702278017558A038FDE9f3cd91902eB19f63f",
    "userId": "297948893"
  }
}